Magnetic properties of carbon-doped FePt nanogranular films

The room-temperature magnetic properties and magnetization reversal process of ordered (FePt)(1-x)C-x thin films, prepared by a cosputtering technique on MgO (100) substrates held at 400 degreesC substrate temperature, have been studied. Perpendicular magnetic anisotropy was obtained for the films with carbon concentrations up to 25 vol % and coercivity enhancement was observed with small carbon-doped FePt thin films. A clear spin-reorientation transition from perpendicular to the in-plane direction was observed with an increase in carbon concentration. The observed magnetic properties are intercorrelated to microstructural changes that occur as a function of the carbon doping. (C) 2003 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2003-10
Language
ENG
Keywords

THIN-FILMS; PERPENDICULAR MEDIA; RECORDING MEDIA; COERCIVITY

Citation

APPLIED PHYSICS LETTERS, v.83, pp.3326 - 3328

ISSN
0003-6951
URI
http://hdl.handle.net/10203/13885
Appears in Collection
PH-Journal Papers(저널논문)
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